PETERBILT 579 TRUCK WALLBERT TRANSPORTATION LLC SKIN American Truck Simulator Mods | 11 Feb, 2016 Skin Wallbert Transportation For Peterbilt 579 Truck Tested 1.0.0 Game Version Author: MildredRatchedRN Tags: PETERBILTHaving trouble with the mod? Check the comments for a solution and report any new bugs you find.